'“All internet systems have been switched off so we had to do everything by hand,” an airline attendant at Tan Son Nhat told Vietnam’s Tuou Tre News.

'At a third hub, Da Nang International, computer systems experienced repeated glitches, according to the news site. Instead of departure and arrival details, the airports’ flight screens and speakers broadcast what local media described as anti-Vietnamese and Philippines slogans, in turn prompting authorities to shut down both systems.'